Analyzing the relationship between distortion product otoacoustic emissions and pure tone audiometry in noise-exposed workers
10. 20001/j. issn. 2095⁃2619. 20224017
- Author:
liu fang
;
cui qingjia
;
yan jin
- Publication Type:Journal Article
- Keywords:
Distortion product otoacoustic emission；Pure tone audiometry；Nois induced hearing loss
- From:
China Occupational Medicine
2022;49(2):211-215
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the relationship between distortion product otoacoustic emission (DPOAE) test and pure tone
audiometry (PTA), and the application of DPOAE test in occupational health inspection of noise-exposed work. Methods
Using the judgment sampling method, 510 noise-exposed workers in an automobile engine factory were selected as the
observation group. The observation group was divided into 5 subgroups according to the characteristics of PTA threshold and
frequency of hearing loss. Another 50 non-noise-exposed workers in the factory were selected as the control group. DPOAE and
PTA were used to detect the pure tone hearing threshold and DPOAE amplitude, signal-to-noise ratio and pass rate of each
frequency in the two groups of workers. Results At 0.5-6.0 kHz, the pure tone hearing threshold value of each subgroup was
higher than the control group (all P<0.05). At 3.0-6.0 kHz, the DPOAE amplitude and signal-to noise ratio of each subgroup were
lower than that of the control group (all P<0.05). At 1.5 kHz, the pass rate of DPOAE in subgroup 1, subgroup 2 and subgroup 3
were higher than the control group (all P<0.05). At 2.0-6.0 kHz, the pass rate of DPOAE in subgroup 4 and subgroup 5 were
lower than the control group (all P<0.05). The area receiver operating characteristic curve (AUC) of the observation subgroups
and control group were 0.71-1.00 by the PTA. The AUC values of the observation subgroups and control group were 0.57-0.97 by
DPOAE. The AUC value in subgroup 5 and control group had a significant difference between the two examination methods (P<
0.01); while the subgroup 1, subgroup 2, subgroup 3, subgroup 4 and control group were no significant differences respectively
(all P>0.05). Conclusion DPOAE is easy to operate and can objectively reflect the hearing level of workers exposed to noise. It
can be used as a supplementary means of PTA and applied to occupational health examination and hearing monitoring screening.
